I haven't used it in my bedrooms, but I'm trying to find an entry and living room color. I'll post my test swatches in case you like one of them.
The entry door wall is Foggy Bay by Do It Best (they use SW paint). It has a green cast and is somewhat similar to Restoration Hardware's Silver Sage.
The wall next to is Silver Screen by SW. A light taupe-y gray.
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This color is my own experiment using a Pastel Base (Do It Best) with a measure of every color except black. My own poor man's attempt at something similar to full-spectrum. I work at a hardware store and was able to experiment with some paint we had to trash after someone drove into the front of the store. Very exciting. Anyway, it takes on a different cast depending on the lighting. Hints of green, or blue, or violet at different times of the day.
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My kitchen in BM Beacon Gray:

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looking for greys, bump

SW Requisite Gray

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Alcove is SW Backdrop

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ttodd, that gray looks pretty awesome with your black and white prints. I look forward to seeing more grays from folks, as I'm dying to use it in our new home.

Here's another gray. BM Fieldstone Walls in my pool house I just remodeled. I used Aura Paint and loved it. It is soo gray on the paint card I thought my computer had really distorted the color when I found it on an inspiration site. When I got it on the walls it is gray in low light and goes really blue in bright light in the living room area. It is beautiful IMHO. I am not a big blue fan but, this color is really rich. Definitely use the Aura, it makes a big difference. I did one wall with regular BM paint and it wasn't near as rich. Can't explain it but, it made a big difference. I used 50% of the Fieldstone on the ceiling & in the back of the open cabinets.

BM Aura Fieldstone
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bump for Red

Here is Serena & Lily's Wharf:

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bumpity boppity boo!

BM Grant Beige
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BM Light Pewter
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BM Ozark Shadows Trad Home Idea House
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BM Seapearl
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BM Silver Fox
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BM Sandy Hook Gray
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F&B Blackened
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F&B Charleston Gray
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F&B Cornforth White
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F&B Hardwick WHite
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BM Oyster Shell
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BM Duxbury Gray
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SW Comfort Gray
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F&B Pigeon
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F&B Pavilion Gray

Hickory Chair Furniture Ad

Cool Yellow & Grey room

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Sherwin Williams "Rain" in a northwestern facing bedroom.

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This is Behr Ultra's Natural Gray in our bedroom. My son only thinks this is his room.

Wow! I love Serena & Lily's Wharf! That is a striking color that may match the grey and yellow silk panels from half priced drapes they have. I ordered a swatch from them. This is really pretty.

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Go Gophers!

I will give this a BUMP by saying that I still haven't seen that perfect grey! One that has colour but is not too dark, more light, more of a silverish, true grey.

Sigh...

Nanny if you're still out there, your bedroom is beautiful! I had now idea how much I liked grey and yellow together.

Blue? Gray? Not sure but I love this color and am copying it for my guest room. In progress now.

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Here is Glidden seal grey mixed in BM paint.

This is a few shades lighter on the card Granite gray also a glidden color

This is SW Palisade , sometimes I think it is taupe and other times I think it is gray.

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BM Pebble Beach

Beauti-Tone Gray Cashmere